set boot parameter vga=ask before debian wheezy 7.6 dvd install

[Dennis Luehring <dl.soluz@gmx.net>]

i try to install an qemu-sparc version of debian wheezy 7.6 (dvd-iso)
the qemu graphics emulation is not full ready yet (freezing very early, 
textmode works) so i want to
try using the vga=ask boot parameter if there is a working framebuffer 
variant

but the vga=ask parameter seems to be deprecated - is there any other 
parameter i can try?

after qemus OpenBios boot i can see debians install prompt "boot:" 
asking for ENTER=install, resuce or expert
mode - what do i need to type in booting the dvd iso kernel with parameters?

thx